Apparatus for refitting stop-valves



(No Model.) 2 sneetssheet `1.

. G. P. HALL.y APPARATUS POR REPITTING STOP VALVES. No. 513,392. Patented Jan. 23, 1894.

WxT'NEEEEE NNNNNNNNNNNNN c.

(No Model.) 4 2 Sheets-Sheet 2.

l 0. P. HALL. APPARATUS FOR R'EFITTING vSTOP VALVES. .NO, 513,392.

PatentedJan. 23, 1894;

INVENTU UNTTED STATES PATENT EETEE.

APPARATUS FOR` REFITTING STOP-VALVES.

SPECIFICATION lforming part of Letters Patent No. 513,392, dated January 23, 1894.

Ap plioation iiled March 1'7, 1 8 92.

To @ZZ whom t 1v1/ty concern:

. .13e it known that I, CHARLES F. HALL, a citizen of the United States, and a resident of Skaneateles, inthe county of Onondaga and State of New York, have invented certain new and useful Improvements in Apparatus for Iteiitting Stop-Valves, of which the following 1s a specification.

My invention relates to apparatus for re` fitting the bearing surfaces of valve disks and seats of stop valves and it consists in the ina-p proved apparatus more particularly adapted for reiitting the disks and seats ofy straightway valves of which the well known Ludlow valve 1s a type, but some parts of which apparatus may also be used in reitting ordinary stop valves, all as hereinafter fully described reference being made to the accompanying drawings, in which- Flgure 1, is a side elevation of my improved apparatus wlth a part in section as applied to the shell of the valve for reitting the seats 1n a straight way valve, said shell being shown in side elevation with a part broken out.

Fig. 2, is a side elevation of part of the apparatus of Fig. 1, detached. Fig. 3,.is a side elevation of other parts of the said apparatus of Flg. 1, detached. Fig. 4, is a front elevation'of the devices of Fig. 3, same as viewed 1n Fig. l, but detached therefrom, and it shows a part -of one ot' the devices of Fig. 1, not shown 1n Fig. 3, said part being sectioned. Fig. 5, is a front elevation of a modified form of one of the devices of Figs. 3 and 4.. Fig. 6, 1s a detail of some of the parts of Figs. 1 and 2, partly in section and showing modifications that may be adopted. Fig. 7,l is a top view of the centering guide of Fig. 1. Fig. 8, is a face view of the centering guide of Fig. 1, with a valve disk applied as in the use of that part of the apparatus for retting disks. Fig. 9, is a back or top view of the same ina modified form of construction. Fig. l0, is a side view of the centering guide in a modified form of Fig. 9, and Fig. 11, is a side elevation of the centering guide and cutter, and the appliances used therewith for refitting the valve disks.

I employ a milling cutter disk c, for relitting the seats b, or disks c, said cutter having a iiat or conical cutting face e, according as the said seats are flat or conical, and for coni- Serial No. 425,231. (No model.)

cal valve disks it will be correspondingly cup shaped. To apply the cutter to the seats b, in the shellf, of a straight way valve, I employ a head block g, on a spindle h to be introduced through the lateral branch t', of the case about the same as the valves are applied, with the cutter and the spindle fitted to the head block so that they may rotate freely and connected by bevel gears j, so that the cutter may be rotated by a hand crank as s, or any other approved means for rotating the spindle applied to the upper end of it, the cutter being at the same time pressed against the seat b, onwhich it is taking effect by any approved means having, preferably, the opposite valve seat for a fulcrum,lbut any other feasible point of support may be employed. The cutter may be mounted on the head-block in any approved way.

In Fig. 1, I represent the `cutter provided with a pivot stud k, entering a socket l, in the head-block, and in Fig. 6, I show the headblock having a pivot stud 7c', on which the cutter having a hole in the center is tted to turn and is secured by the tapscrew m; the

bevel wheel j, belonging -to the cutter is secured to it by screws n. The spindle h, has a journal o, extending through the head-block and having a check-nut p, screwed on below the head-block to keep the parts in `connection, and to the lower extremity of the spindle, I represent a milling cutter q, attached Such as I employ on a like spindle in my pre-` viously patented apparatus for refitting the seats of globe stop valves, the said spindle being alike applicable for use in refltting both forms of valves.

For utilizing the opposite valve seat b, for the fulcrum from which to apply the force t-o press the cutter against the seat being dressed,

. I employ a diskt, connected to the head-block by a stud u, with a wedge c, between said disk and head-block to be driven forward a little from time to time to set up the cutter, or the disk t', connected to the head-block by the screw stud u', and having sockets w, in the edge for the application of a lever or Spanner for turning it to force up the cutter by the screw stud, said lever or Spanner to be applied through the lateral branch 1l and the wedge may be driven by a rod inserted through the mouth of the lateral branch or it ICO yzo

may have a shank extending above the top of the said branch to be driven by a hammer, or it may be tted with an adjusting nut y, for feeding the wedge gradually, the nut having suitable connection with any approved means of supporting it against the resistance of the wedge, as a bracket z, attached to the disk a', or an arm as 2, of the guide hub 3, for the spindle h. In case the said hub is made with a disk instead of arms, the disk may have holes as 23 for the shank of the wedge.

The disk t, and wedge o, are suitably tapered on the sides working together for best effects, and the wedge is bifurcated to take effect at both sides ofthe stud u. Any other approved means of seating the appliance on one valve seat from which to force the cutter, acting on the other seat may be employed, as for instance a cross bar, and the like device.

To guide and control the upper end of the spindle the above mentioned hub 3, is employed, together with radially adj ust-able jaws 4, for centering it in the open mouth of the lateral branch fi', said jaws having one or more screw threaded shoulders 5, to enter the internally threaded mouth of the branch and screw in tight, said jaws being applied to radial arms of the hub, or it may be a complete disk in any approved way, so as to be shifted radially to adjust them to the size of the open screw threaded mouth and to secure them in position; as a simple means of connecting them they may be set in ra dial grooves as 6, in the arms or disk and secured with clamping bolts 7, in radial slots 8, or they may bey fitted on screw threaded armsas 9, with an adjusting nut l0, in a slot of the jaw, and with set screws 11, to make them fast, the screw threads being suitably flattened as at 12, for the bearing points of the set screws. Any'other practical mode of applying and adjusting the said jaws may of course be employed. The two threaded shoulders 5, of the jaws are differentiated radially for application of the jaws to valve cases of materially different sizes. The inner faces of the jaws are adapted for gripping the valve disks C, by the edge so that the guide for the valve spindle may also be utilized for a chuck to hold the valve disks for reiitting them, in which case the hub 3, is inserted in the socket of the standard 1.5, with or without a spindle h', Fig. 10, and secured by a set screw 16, while the cutter d, with the bevel wheel j removed, or another suitable cutter placed on the end of a spindle 17, carried in another standard 18 within a screw threaded feeding sleeve 19, and having a crank 20, for turning it, is used to reiit the valve disks so held as represented in Fig. 10.

A coiled spring 21, is applied to the spindle h, between the under side of the guide hub, and the wheel j, to hold the cross-head and other parts down, and the adjustable collar 22, is applied to the spindle above the guide hub to adjust the height of the cutter relatively to the seats to be dressed. When one seat has been dressed the apparatus is taken out and reversed and applied to the other seat for dressin git. The spring may be above and the collar below the hub if desired.

I claim- 1. In a valve retting device the combination with the guide hub and jaws applicable to the mouth of the lateral branch of the valve, and with the rotary spindle in said guide hub, of the head block journaled on the spindle, and adapted to have support at one end laterally to the spindle, and the cutter journaled in the head block and geared with the spindle substantially as described.

2. In a valve refitting device the combination with the guide hub and jaws applicable to the mouth of the lateral branch of the valve, and with the rotary spindle in said guide hub, of the head block journaled on the spindle, and adapted to have support at one end laterally to the spindle, adjusting devices between said head block and its support, and thexcutter pivoted on the other end of said head block and geared with the spindle substantially as described.

8. In a valve refitting device the combination with the guide hub and jaws applicable to the lateral branch of the valve, and with the rotary spindle in said guide hub, of the head block journaled on the spindle, the cutter pivoted on lthe head block and geared with the spindle, and the coiled spring and adjustable collar on the spindle above and below the guide hub respectively substantially as described.f A

Signed at Skaneateles, in the county of Onondaga and State of New York, this 12th day of February, A. D. 1892.

CHARLES F. HALL.

Witnesses:

C. R. MILFORD, M. F. DILLoN. 

